The 1S91 Radar (NATO Name "Straight Flush") can be used with the SA6 SAM system addon. The real 1S91 uses active targeting radar and has an optional backup television targeting system that provides optional passive radar tracking and backup targeting guidance. It provides targeting capability to an entire SA6 SAM battery. The addon uses the laser designator to simulate the targeting capabilities and does not "slave" to in-game SAM units.